293 
VELLA Pseudo-Cytisus. 
Shrubby Cress-rocket. 
<i 
TETRADYNAMIA SILICULOSA. 
Nat. ord. Cruciverm. Jussieu gen. 237. Div. IT. Fructus silicu. 
losus. Stylus unicus. 
VELLA.  Silicula ventricosa; stylo foliaceo ovato. Cotyledones con- 
duplicate. Cal. clausus, Brown in Hort. Kew. ed. 2. 4. 79. 
Suffrutices integrifolii, aut herbee foliis pinnatifidis. Juss. ]. c. 241, 
V. Pseudo-Cytisus, foliis integris obovatis ciliatis, siliculis erectis. zn. sp, 
1. 2. 895. 
Vella Pseudo-Cytisus. Mill. dict. ed. 8. n. 2. Hort. Kew. 2. 370. ed. 2. 
4.79. Cavanill. ic. 1. 32. 4.42. Lamarck ill. t. 555. f. 2. Willd. sp. pl. 
3.4.22. 
Pseudocytisus flore Leucoji luteo. Bauh. pin. 390. 
Cytisi facie Alysson fruticans quorundam. Lod. ic. 2.49. Bauh. hist. 1. 
374, 
Suffrutex Jipedalis v. magis erectus, hispidus, pilis brevibus valdé ramosus, 
cortice fusco-pallescente. Fol. laxiiis sparsa, axillis ita subprolifera ut ternata 
sessilia feré simulent, crassiora, duro-carnosa, spathulata lamind elliptica ob- 
ovatave, pilis antrorsum inclinatis hispida, ciliata, Racemi terminales, mul- 
tiflori, laxiits sparst, oblongt, cylin racei, erecti, stmplices, patentes. Pe- 
icelli_ uniflori, brevissimi, ebracteati. Flores lutet, erectiusculi, infra pe- 
talorum laminas scepiis anté emarcescentiam ustulato-purpurascentes, odor, % 
uncie longi. Cal. ¥ uncle longus, scabro-pubescens, tubulosus, foliolis a 
marginibus membranaceis subcoherentibus, oblongis, obtusis. Pet. obcordato- 
spathulata, ungue filiforme subiriplg longiore lamina, extra calycem convoluto, 
lamina unicolore venosd parva obcordatd. Stam. omnia fertilia (nec ut vult 
Linnaeus paribus connatis castratis ), emicantia calyce ; antheris apice replicatis, 
Germ. ovale, glabrum, compressum, anceps, subsessile: stylus Lemenaste ob- 
longus, complanato-anceps, magnitudine fere germinis cut transversus, pallido- 
virens, stigmate parvulo rotundo subbilobo pruinoso saturate viridi prefixus. 
The parts commonly selected to distinguish the charac-- 
ters of generic groups, owing to a great degree of equa- 
bility in the transitions of the species of the natural or- 
der to which our plant belongs, having been found to afford 
only faint and equivocal distinctions; it has occurred to Mr. 
Brown to avail himself of the seminal viscera, called cotyle- 
dons or seed-lobes, in aid of the former inefficient means, 
The account to which he has turned the expedient will be 
seen by referring to the characters in his reform of the genera 
of this class in the late edition of the Hortus Kewensis. 
K 2 
